Carbureter.



H. A. MILLER & F. M. ADAMSON.

CARBURETER I APPLICATION FILED APR. 26. I9I6.-

Patented Aug. 7, 1917.

2 SHEETS-SHEET I.

H. A. MILLER & F. M. ADAMSON. CARBURETER. APPLICATION man APR. 26. 1916.

1,236,096. Patented Aug. 7,1917.

2 SHEETS-SHEET 2.

HEM 7J5.

HARRY A. MILLER AND FRANK M. ADAMSON, OF LOS ANGELES, CALIFORNIA,

ASSIGNORS, BY MESNE ASSIGNMENTS, TO MASTER CARBURETOR CORPORA- TION, OF DETROIT, MICHIGAN, A CORPORATION OF DELAWARE.

CARBURETER.

Original application filed February 10, 1914, Serial No. 817,779.

Specification of Letters Patent.

1916. Serial No. 93,640.

To all whom it may concern.

Be it known that we, HARRY A. MILLER and FRANK M. AnAMsoN, citizens of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Carbureter, of which the following is a specification.

This invention relates to the construction of the float chamber and its operating parts and is a division of our prior application for patent for carbureters filed February 10, 1914, Serial No. 817,779.

An object of this invention is to insure removal of all sediment and foreign matter from the gasolene before it passes from the float chamber into the mixing chamber.

Another object is to facilitate removal of the sediment and foreign matter collected in the carbureter from the gasolene passing therethrough.

Another object is to produce a construction whereby the float-operated valve and its seat may be readily cleaned and put in good order when necessary.

Other objects and advantages may appear in the subjoined detailed description taken in connection with the drawings filed herewith.

Figure 1 is a side elevation of a carbureter embodying the invention.

Fig. 2 is a plan view of Fig. 1.

Fig. 3 is an enlarged fragmentary elevation mainly in section on line indicated by w w Fig. 2.

Fig. 4 is a reduced plan section of the removable base and double nipple, said nipple being in section on line indicated by w w-*, Fig. 3.

Fig. 5 is a reduced plan view partly in section on irregular line indicated by m m Fig. 3.

Fig. 6 is a sectional plan on line indicated by av -m Fig. 3.

There is provided a substantlally cylindrical float chamber or top section 1 and a 4 substantially cylindrical base chamber or section 2, the top section being provided at its lower end with an annular inwardly and downwardly tapered seat 3 engaging the mm 4 of the base section. The bottom. 5 of the .top section forms a partition between said upper section and base section and said bot tom is provided with a screw threaded opening 6 into which is screw threaded the upper end 7 of a double nipple, the lower ends 8 of said nipple being screw threaded into a hollow cap 9. The cap 9 projects through a hole 10 in the base section 2 and is provided with a flanged head 11 engaging the bottom face of the base section, thus tightly holding the seat 3 and rim 4 in engagement with one another to form a tight joint between the top and base sections.

From the foregoing it is seen that the top and base sections may be adjusted relative to one another around the axis of the float chamber and that the double nipple and cap provide means to hold the upper and base sections in their adjusted positions.

The lower portion of the cap 9 forms a sediment chamber 12 communicating through the vertical nipple passage 13 with the top section 1 and communicating through said vertical passage and through transverse passages 14 with the interior of the base section 2 above a screen or strainer 15 which surrounds the double nipple and which rests on an annular lip 16 in the interior of the base section 2, there being a resilient band or ring 17 of wire or the like seated between the margin of the screen and a shoulder 18 of the base section so as to securely hold the screen in place.

The base section 2 is provided below the screen 15 with an inlet 19 connected by a couprovided with a detachable cover 22 seated at its edge on an annular shoulder 23 projecting inward from the inner face of the top section, there being a resilient ring or band 24 of wire or the like seated in a recess 25 of the top section 1 and engaging the margin of the cover 22 to securely hold said cover in place.

The cover 22 is provided with a central guide orifice 26 designed to guide a valve stem 27 which is provided at its lower end with a valve plug 28 designed to project into the nipple passage 13 and to engage a seat 29 in the upper end 7 of said nipple.

The stem 27 is provided just beneath the guide'oriflce 26 with a collar 30 having an annular slot 31 to accommodate the inner forked ends of levers 32 pivoted at 33 to downwardly extending lugs 34 of the cover 22. The outer ends of the levers 32 are provided with weights 35 which rest on the top of a cylindrical float 36 having a central orifice 37 through which the valve stem 27 projects so that said float is guided by and is free to slide up and down and rotate on said valve stem.

Up and down movement of the float 36 operates the levers 32 and thereby moves the valve stem 27 to close and open the valve, said up and down movement of the float being caused by change of level of the fluid a in the top section 1 of the float chamber in a manner well understood.

The top section 1 is joined by a neck 38 to the m'iXing chamber-39' of the carbureter and said neck is provided at one side with an internally threaded hollow boss 40 forming an opening into which is screw threaded a nipple 41 having a head 42' seated against the outer face of said boss. The nipple 41 communicates through a passage 43 with a noz'zle 44 of any suitable construction so as to afford passage for fuel from the interior of the top section 1 to the mixing chamber 39. I

The nipple 41 is provided at its inner end with a cylindrical screen 45' extending from said nipple to the opposite side of the neck 38, said opposite side forming a closure for the adjacent end of the screen and said screen being of less diameter than the opening through the boss 40 so .that it can be readily withdrawn through said opening for cleaning when the nipple 41 is unscrewed for that purpose.

From the foregoing it is seen that the gasolene passing through the float chamber is twice strained and that any sediment collecting on the screens 15, 45 and in the base section 2 and in the sediment chamber 12 can be quickly and readily removed. Whatever sediment is deposited in the chamber 12 is of course that which is sufliciently fine to pass through the screens 15, 45'. p I In practical operation when fuel is sucked from the noz'z'le 44 through the passage 43 from the top section 1, gravity will act on the weights 35 and float 36 to lower said float in proportion to the amount of gasolene drawn off from the nozzle and the action of the weights 35 will beto raise the forked ends of said levers and consequently raise the valve stem 27 to open the valve and admit fuel from the base section 2 into the top section 1 until the prescribed level. of fuel, governed by the weight of the weights 35 and float 36, is again reached, raising of the float 36 shutting off the valve.

In setting up the carbureter, it is noted that the top, and base sections 1, 2 may be 65 turned relative to one another to bring the outlet 46 and inlet 19 into proper position for connecting to the manifold, not shown,

of the engine and to the fuel supply pipe 21. To make relative adjustments of the top and base sections 1, 2 the cap '9 will be slightly loosened and said sections will be relatively turned to the desired positions, whereupon the cap will be tightened to hold said sections firmly together.

To clean out sediment and foreign matter from the carbureter, the cap 9 will be unscrewed and it and the base section 2 will be removed; and the nipple 41 will be imscrewed and removed, thereby removing with it the screen 45. The parts thus detached will then be cleaned and reassembled into place by operations the reverse of those just described for detaching them.

The foregoing will enable those skilled in the art to make and use the invention.

We claim:

1. In combination, a float chamber, a neck on the float chamber adapted to be connected with a mixing chamber, said neck being provided with a passage and being provided in one side with an opening communicating with said passage, a nipple screw-threaded into said opening, and a cylindrical screen projecting from the inner end of the nipple toward the opposite side of said neck, said opposite side forming a closure for the adj acent end of the screen.

2. In a carbureter, a float chamber, a base chamber, with its upper rim removably fitting against the bottom of the float chamber a double nipple screwed into the bottom of the float chamber, said nipple having a transverse passage communicating with the base chamber and a longitudinal recess communic'ating with the float chamben-a strainer in the base chamber secured thereto and surrounding the double nipple below the trans verse passage of said nip-ple, and a hollow nut screwed on the double nipple forretaining the base chamber in position, said longitudinal recess communicating with the interior of said nut. I

3. In combination, a 'float "cl-iamber, fuelcontrolling means in said floa-t chamber, a

base chamber-open at the top and having'its rim engaging the bottom of the float chamber and provided with an opening through the bottom, a'ca-p inserted in said opening.

and forming a sediment chamber, adouble nipple connecting the cap to the fl'oat' chamber and communicating with the base chamber, annular shoulders on the inside of the base chamber, a screen surrounding the=nip ple and having its margin seated on'one of said shoulders, a resilient ring seated against the other shoulder and engaging the margin of the screen, and an inlet to the base chamber below the level of the screen.

4. In combination, a float chamber, fuelcontrolling means in said float chamber, "a

neck, for the float chamber to connect said chamber to a mixture chamber, said neck being provided with a passage and being provided with an opening in one side, a nipple screw-threaded into said opening and communicating with said passage, and a cylindrical screen projecting from the inner end of the nipple toward the other side of the neck and of less diameter than the opening so as to be removable with the nipple through said opening, said other side of the neck forming a closure for the adjacent end of the screen.

In testimony whereof, we have hereunto set our hands at Los Angeles, California, 15 this 21st day of April 1916.

HARRY A MILLER. FRANK M. ADAMSON.

In presence of GEORGE H. HILEs, ANNA F. SCHMIDTBAUER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

